# coding:utf-8
import re
import urlparse
from bs4 import BeautifulSoup


class HtmlParser(object):

    def parser(self, page_url, html_cont):
        if page_url is None or html_cont is None:
            return
        soup = BeautifulSoup(html_cont, 'html.parser')
        new_urls = self.__get_new_urls(page_url, soup)
        new_data = self.__get_new_data(page_url, soup)
        return new_urls,new_data

    def __get_new_urls(self, page_url, soup):
        new_urls = set()
        links = soup.find_all('a', href=re.compile(r'/item/\w+'))
        for link in links:
            new_url = link['href']
            new_full_url = urlparse.urljoin(page_url, new_url)
            new_urls.add(new_full_url)
        return new_urls

    def __get_new_data(self, page_url, soup):
        data = {}
        data['url'] = page_url
        title = soup.find('dd', class_='lemmaWgt-lemmaTitle-title').find('h1')
        data['title'] = title.get_text()
        summary=soup.find('div',class_='para')
        data['summary']=summary.get_text()
        return data
        